* The Sun is a star, a giant ball of hot gas that generates its own light and heat through nuclear fusion.

* Planets are celestial bodies that orbit stars. They are much smaller and do not generate their own light.

While there are massive gas giants like Jupiter and Saturn in our solar system, even they are significantly smaller than the Sun.

It's important to note that there are objects in space called brown dwarfs, which are larger than planets but smaller than stars. They are sometimes referred to as "failed stars" because they don't have enough mass to sustain nuclear fusion. However, even the largest brown dwarfs are still smaller than the Sun.